First-term Illinois Sen. Mark Kirk suffered a stroke this weekend and is now recovering from surgery. He had driven himself to the hospital "where doctors discovered a carotid artery dissection in the right side of his neck," according to his office. A neurosurgeon at the hospital says the stroke was on the right side of his brain, which "will affect his ability to move his left arm and possibly his left leg" and could result in "some facial paralysis." But it shouldn't affect his ability to speak or think.